Run results for: for vs foreach vs some vs every vs for..of vs map

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 18_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/131.0.6778.134 Mobile/15E148 Safari/604.1

Browser: Chrome Mobile iOS 131

Operating system: iOS 18.1.1

Device Platform: Mobile

Date tested: one year ago

Benchmark engine: Benchmark.js

for

21.3M/s

foreach

624K/s

some

619K/s

every

611K/s

map

523K/s

for..of

424K/s

View exact numbers

Test name	Executions per second
✓ for	21,309,372 Ops/sec
foreach	624,279 Ops/sec
some	619,312 Ops/sec
every	610,568 Ops/sec
map	522,945 Ops/sec
for..of	423,988 Ops/sec

Script Preparation code:

var array = new Array(100);

Tests:

for
for (var i = 0; i < array.length; i++) { array[i]; }
foreach
array.forEach(function(i) { array[i]; });
some
array.some(function(i) { array[i]; });
every
array.every(function(i) { array[i]; });
for..of
for (var i of array) { array[i]; }
map
array.map(a => a);

Run results for: for vs foreach vs some vs every vs for..of vs map

Compare loop performance

for

foreach

some

every

for..of

map